This case report investigates the radiation dose received by a paediatric patient with a ventricular assist device who underwent four non-contrast brain computed tomography (CT) scans, two brain perfusion CT scans and two head angiographic CT scans. The total estimated absorbed dose to the lens of the eye is above the 500 mGy radiation-induced cataract threshold. It is recommended that this patient and those with similar imaging histories have routine follow-up with an ophthalmologist. It is also recommended that radiation dose tracking and an electronic medical alert program be implemented to allow the identification of patients who may exceed tissue reaction thresholds.

中文翻译：

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诊断成像中超过诱发白内障的辐射阈值：儿科病例报告

本病例报告调查了一名使用心室辅助装置的儿科患者接受的辐射剂量，该患者接受了四次非造影脑计算机断层扫描 (CT)、两次脑灌注 CT 扫描和两次头部血管造影 CT 扫描。眼睛晶状体的估计总吸收剂量高于 500 mGy 辐射诱发白内障阈值。建议该患者和具有类似影像学史的患者接受眼科医生的常规随访。还建议实施辐射剂量跟踪和电子医疗警报程序，以识别可能超过组织反应阈值的患者。